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Finding the Fourth Proportional to 259,924.41, 389,900.38 and 72,950.49

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Solution

The fourth proportional to 259,924.41, 389,900.38 and 72,950.49 is: 109,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,924.41 : 389,900.38 = 72,950.49 : x
  2. Step 2: Convert to fraction form
    259,924.41/389,900.38 = 72,950.49/x
  3. Step 3: Cross multiply
    259,924.41x = 389,900.38 × 72,950.49
  4. Step 4: Simplify right side
    259,924.41x = 28,443,423,772.19
  5. Step 5: Solve for x
    x = 28,443,423,772.19/259,924.41
  6. Step 6: Final answer
    x = 109,429.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.